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annotate mamba/engine.py @ 38:047273a63054

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Main menu says hello
author Stefano Rivera <stefano@rivera.za.net>
date Sun, 11 Sep 2011 14:57:11 +0200
parents b38411d253e3
children e5f36843f7cd
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0196455fa432 Minimal event loop.
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1 """Game engine and top-level game loop."""
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2
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3 from mamba.constants import SCREEN
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4 from mamba.widgets.base import Container
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5
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6 import pygame.event
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7 import pygame.display
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8 import pygame
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9 from pygame.locals import QUIT, USEREVENT
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12 class Engine(object):
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13 def __init__(self):
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14 self._habitat = None
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16 def set_habitat(self, habitat):
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17 self._habitat = habitat
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18
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19 def run(self):
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20 """Game loop."""
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21 get_events = pygame.event.get
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22 flip = pygame.display.flip
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23 surface = pygame.display.get_surface()
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24 while True:
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25 events = get_events()
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26 for ev in events:
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27 if ev.type is QUIT:
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28 return
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29 self._habitat.dispatch(ev)
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30 self._habitat.draw(surface)
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31 flip()
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33
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34 class Habitat(object):
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36 def __init__(self):
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37 self.surface = pygame.Surface(SCREEN)
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38 self.container = Container()
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39
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40 def dispatch(self, ev):
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41 self.container.event(ev)
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42
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43 def draw(self, surface):
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44 self.surface.fill(pygame.Color('black'))
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45 self.container.draw(self.surface)
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46 surface.blit(self.surface, self.surface.get_rect())
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48
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49 class UserEvent(object):
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50
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51 utype = "UNKNOWN"
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52
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53 @classmethod
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54 def post(cls, **kws):
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55 ev = pygame.event.Event(USEREVENT, utype=cls.utype, **kws)
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56 pygame.event.post(ev)
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57
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58 @classmethod
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59 def matches(cls, ev):
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60 return ev.type is USEREVENT and ev.utype == cls.utype